BN–Graphene Composites Generated by Covalent Cross‐Linking with Organic Linkers

Abstract

Composites of boron nitride (BN) and carboxylated graphene are prepared for the fi rst time using covalent cross-linking employing the carbodiimide reaction. The BN 1-x G x ( x ≈ 0.25, 0.5, and 0.75) obtained are characterized using a variety of spectroscopic techniques and thermogravimetric analysis. The composites show composition-dependent electrical resistivity, the resistivity decreasing with increase in graphene content. The composites exhibit microporosity and the x ≈ 0.75 composite especially exhibits satisfactory performance with high stability as an electrode in supercapacitors. The x ≈ 0.75 composite is also found to be a good electrocatalyst for the oxygen reduction reaction in fuel cells.

Liquid Phase Exfoliated Hexagonal Boron Nitride/Graphene Heterostructure Based Electrode Toward Asymmetric Supercapacitor Application

“…Figure 7A shows that after 10,000 times of rapid charge and discharge tests, BN:G(1:2) electrode has only 4% loss, exhibiting its excellent electrochemical stability. This is because h-BN has extremely high chemical and thermal stability, providing synergies with high electrochemical stability when it exists in conductive graphene systems (Kumar et al, 2015). Figure 7B shows the AC impedance diagram of BN/G samples with different mass ratios.…”

Covalent Functionalized Boron Nitride Nanosheets as Efficient Lubricant Oil Additives

“…The experimental results revealed that the lube base oil with 0.04 mg mL −1 h‐BNNPs‐ODTES produced a 16% reduction in friction coefficient and a 40% decrease in wear scar diameter. In addition, the preparation of surface‐functionalized h‐BN by covalent cross‐linking has attracted widespread interest among researchers . Kumar et al prepared a series of graphene‐BN composites by covalent cross‐linking using organic linkers.…”

“…In addition, the preparation of surface‐functionalized h‐BN by covalent cross‐linking has attracted widespread interest among researchers . Kumar et al prepared a series of graphene‐BN composites by covalent cross‐linking using organic linkers. Inspired by this, the 3‐aminopropyltriethoxysilane (APTS) and 4‐carboxyphenylboronic acid (CPBA)‐grafted h‐BNNSs are designed and synthesized, which can be used as potential lubricant additives.…”

Novel cyclodextrin‐modified h‐BN@Pd(II) nanomaterial: An efficient and recoverable catalyst for ligand‐free C‐C cross‐coupling reactions in water

“…This is probably due to the lack of sufficient binding sites on the surface of pristine h‐BN, where the metal nanoparticles are bounded only by weak non‐covalent interactions. On the other hand, despite several studies on the morphology, properties and preparation of organic modified h‐BN, no metal has been immobilized onto organic‐functionalized boron nitride as a heterogeneous catalyst. Herein, we report the first production of Pd catalyst based on β‐CD modified h‐BN, as a separable and recyclable catalyst for Suzuki and Heck coupling reactions.…”